Answer:The expansion of the railroads in the late 1800s was instrumental in helping the US economy boom. It did this in two ways. First, the railroads created a tremendous amount of demand for goods and labor on their own. As the railroads were being built, they needed huge numbers of people to build them.
Explanation:
Climatic condition was the major factor for migrating to new places.
C.) The government's decision to raise taxes to pay its huge debts
